An MVR centrifugal steam compressor intake anti-surge pipe

Abstract

The present invention relates to the technical field of steam compressors, and in particular to an MVR centrifugal steam compressor intake anti-surge pipe. Its technical solution includes an MVR centrifugal steam compressor body, a shell, an intake pipe, a buffer bin and a support ring. An intake pipe is provided at one end of the MVR centrifugal steam compressor body, a shell is sleeved on the outside of the intake pipe, a buffer bin is provided at the center section of the intake pipe, a rotating shaft is rotatably installed inside the buffer bin, blades distributed in a circular array are provided on the outer wall of the rotating shaft, support rings are provided on both the front and rear sides of the buffer bin, and a spring 2 distributed in a circular array is provided inside the support ring, a positioning block is provided at one end of the spring 2, and a ball is provided at one end of the positioning block. By providing a buffer bin, the present invention solves the problem that the intake pipe of the MVR centrifugal steam compressor body does not have an anti-surge function, the gas flow is unstable, and shock and vibration are generated, which affects the operating efficiency of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of steam compressors, in particular to an air intake anti-surge pipe of an MVR centrifugal steam compressor. Background Art

[0002] MVR refers to Mechanical Vapor Recompression technology, which achieves energy recovery and energy saving by compressing and reheating the already generated steam to increase its temperature and pressure. A centrifugal steam compressor is a device that uses centrifugal force to compress gas to a higher pressure. It pushes the gas to the periphery through a rotating centrifuge and produces a compression effect on the outer wall of the rotor, thereby increasing the pressure of the gas. However, when in use, the intake pipe of the MVR centrifugal steam compressor does not have an anti-surge function, the gas flow is unstable, and shock and vibration are generated, affecting the operating efficiency of the equipment. Therefore, those skilled in the art provide an MVR centrifugal steam compressor intake anti-surge pipe to solve the problems raised in the above background technology. Summary of the Invention

[0003] The purpose of the present invention is to address the problems existing in the background technology and to propose an air intake anti-surge pipe for an MVR centrifugal steam compressor.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an MVR centrifugal steam compressor intake anti-surge pipe, comprising an MVR centrifugal steam compressor body, an outer shell, an intake pipe, a buffer bin and a support ring, wherein an intake pipe is provided at one end of the MVR centrifugal steam compressor body, the outer shell is sleeved on the outside of the intake pipe, a buffer bin is provided at the center section of the intake pipe, a rotating shaft is rotatably installed inside the buffer bin, blades distributed in a circular array are provided on the outer wall of the rotating shaft, support rings are provided on both the front and rear sides of the buffer bin, two springs distributed in a circular array are provided inside the support ring, a positioning block is provided at one end of the spring two, and a ball is provided at one end of the positioning block.

[0005] Preferably, the rotating shaft is provided with a guide wheel with an annular rolling groove on its outer wall at one end outside the buffer bin, and the balls are rollingly mounted on the outer wall of the guide wheel. The guide wheel guides the balls in rotation, reduces wear on the contact surface of the balls, and improves the stability of the balls during rotation.

[0006] Preferably, a support rod is provided at one end of the positioning block, the support rod being located inside the second spring, and the outer wall of the support ring is provided with symmetrically distributed support columns connected to the inner wall of the housing. The support rod limits the second spring during the extension and contraction process to prevent the second spring from deviating outward.

[0007] Preferably, a sliding sleeve is embedded in the support ring, and one end of the support rod is slidably inserted into the sliding sleeve. The support rod is slidably guided in the support ring by the sliding sleeve, thereby enabling the support rod to move effectively when subjected to force.

[0008] Preferably, a mesh sleeve is sleeved on the outside of the air intake pipe and the buffer chamber, and an insulation sleeve is sleeved on the outside of the mesh sleeve. The mesh sleeve is sleeved on the outside of the air intake pipe, and the outside of the mesh sleeve is sleeved on the outer shell. The mesh sleeve is designed with a porous structure to allow air to flow through multiple small holes, slowing the gas flow speed and thus reducing the generation of noise. The special spiral or curved mesh design can change the direction and speed of gas flow and reduce the probability of noise generation.

[0009] Preferably, flanges are provided at both ends of the air inlet pipe, and the flanges are located at the openings at both ends of the shell. The flanges are used for connecting between pipes and connecting the air inlet pipe with the opening of the MVR centrifugal steam compressor body.

[0010] Preferably, a positioning ring is sleeved on the outside of the intake pipe, and mounting tubes are arranged in a circular array on the inner walls of the openings at both ends of the housing. One end of each mounting tube is provided with a rubber head that fits against the outer wall of the positioning ring. The positioning ring supports the rubber head, which has a damping effect, thereby buffering impact forces.

[0011] Preferably, a piston is slidably mounted on the inner wall of the mounting cylinder, and a plug rod is provided at one end of the piston. The plug rod drives the piston to slide inside the mounting cylinder, and the piston is connected via the plug rod.

[0012] Preferably, a sealing ring is provided on the inner wall of one side of the mounting tube, and one end of the plug rod is slidably inserted into the sealing ring, and one end of the plug rod is connected to the inner wall of the opening at both ends of the shell. The plug rod is slidably supported in the mounting tube by the sealing ring, thereby guiding the plug rod in sliding.

[0013] Preferably, a limit ring is sleeved on the outer wall of the mounting tube, and one end of the limit ring is provided with a spring 1 that sleeves on the outside of the mounting tube and connects to the inner wall of the openings at both ends of the housing. The spring force of spring 1 acts on the mounting tube through the limit ring, and the elastic force of spring 1 then acts on the rubber head and the intake pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a buffer chamber inside the intake pipe. Blades are rotatably mounted inside the buffer chamber and are supported by a rotating shaft and distributed in an annular array on the outer wall of the rotating shaft. When the outer side of the rotating shaft rotates, resistance is applied by an elastic member. The input gas drives the blades to rotate. The resistance applied by the blades reduces the impact of gas entering the pump body of the MVR centrifugal steam compressor on the rotor and the inner wall of the casing. The vortex and gas flow drive the blades to rotate, thereby achieving shock absorption and shock absorption of the gas.

[0016] At the same time, the outer elastic part applies resistance to control the operation of the shaft and reduce the impact force of the gas. It is designed to effectively reduce the impact transmission when the gas enters the pump body of the MVR centrifugal steam compressor. The blade organization in the buffer chamber can reduce the speed difference of the gas flow, stabilize the airflow dynamics, and disperse or absorb part of the impact and pressure to prevent surge problems in the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the housing of the present invention when viewed from above;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the housing of the present invention in a top cross-sectional view;

[0020] Figure 4 This is a schematic diagram of the main cross-sectional perspective structure of the air intake pipe of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the air intake pipe in a side cross-section of the present invention;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the mounting tube of the present invention in a side cross-sectional view;

[0023] Figure 7 It is a schematic diagram of the main cross-sectional three-dimensional structure of the buffer bin of the present invention.

[0024] Figure numerals: 1. MVR centrifugal steam compressor body; 2. outer casing; 3. flange; 4. insulation sleeve; 5. mesh sleeve; 6. air inlet pipe; 7. buffer chamber; 8. support ring; 9. spring 1; 10. support column; 11. plug rod; 12. mounting tube; 13. sealing ring; 14. limiting ring; 15. piston; 16. rubber head; 17. positioning ring; 18. rotating shaft; 19. blade; 20. positioning block; 21. ball; 22. guide wheel; 23. spring 2; 24. support rod; 25. sliding sleeve. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figures 1 to 7 , the present invention provides three embodiments:

[0027] It includes an MVR centrifugal steam compressor body 1, an outer shell 2, an air inlet pipe 6, a buffer bin 7 and a support ring 8. An air inlet pipe 6 is provided at one end of the MVR centrifugal steam compressor body 1, and the outer shell 2 is sleeved on the outside of the air inlet pipe 6. A buffer bin 7 is provided in the central section of the air inlet pipe 6. A rotating shaft 18 is rotatably installed inside the buffer bin 7, and blades 19 distributed in a ring array are provided on the outer wall of the rotating shaft 18. Support rings 8 are provided on the front and rear sides of the buffer bin 7. Springs 23 distributed in a ring array are provided inside the support ring 8. A positioning block 20 is provided at one end of the spring 23, and a ball 21 is provided at one end of the positioning block 20.

[0028] The rotating shaft 18 is located at one end outside the buffer bin 7 and is provided with a guide wheel 22 with an annular rolling groove on the outer wall. The ball 21 is rollingly mounted on the outer wall of the guide wheel 22.

[0029] A buffer chamber 7 is located within the intake duct 6. Inside, an annular array of blades 19 is mounted, supported by a rotating shaft 18. The blades 19 rotate through vortexes and gas flow, damping and absorbing gas shock. Furthermore, an outer elastic member applies resistance to control the rotation of the rotating shaft 18, reducing the impact force of the gas. This design effectively reduces the transmission of shock when the gas enters the MVR centrifugal steam compressor pump body. This improvement can help prevent surge in the intake duct 6 or system. When gas flow changes and pressure fluctuates dramatically, the arrangement of the blades 19 within the buffer chamber 7 reduces velocity variations in the gas flow, stabilizes airflow dynamics, and disperses or absorbs some of the shock and pressure, helping to prevent system surge to a certain extent. The advantages lie in reducing gas shock, smoothing airflow, and alleviating stress on the equipment. However, care must be taken to ensure that the material and structure of the blades 19 are suitable for sustained, stable operation and withstanding the impact of gas flow. While this improvement has some vibration reduction effect on the intake duct 6 / centrifugal steam compressor and helps smooth gas flow, its primary purpose is to reduce shock and fluctuations in gas flow rather than typical surge vibration prevention. Therefore, this design can play a certain role in vibration reduction and help reduce the impact of gas entering the MVR centrifugal steam compressor. However, further evaluation is needed in combination with system characteristics to improve the anti-surge design.

[0030] The intake pipe 6 transports the gas to the interior of the MVR centrifugal steam compressor body 1. The MVR steam compressor draws in gas or steam through the high-speed rotating impeller under the action of centrifugal force, and then discharges it after acceleration. Inside the impeller, the gas is compressed and pressurized. At the same time, the design of the blades 19 realizes the cooling and pressure increase of the gas, and finally outputs high-temperature and high-pressure compressed gas. As part of the MVR centrifugal steam compressor system, the intake pipe 6 has the main function of introducing gas or steam and delivering it to the compressor body for compression. The gas or steam enters the intake pipe 6 from the air inlet, flows through the buffer tank 7 and improved structure set at the top of the pipe, and reduces the impact, vibration and noise that may be generated during the gas flow. The design inside the intake pipe 6 should be conducive to reducing resistance, weakening vortex, and smoothing gas flow, ensuring that the gas smoothly reaches the impeller part of the steam compressor for compression.

[0031] Example 2:

[0032] It includes an MVR centrifugal steam compressor body 1, an outer shell 2, an air inlet pipe 6, a buffer bin 7 and a support ring 8. An air inlet pipe 6 is provided at one end of the MVR centrifugal steam compressor body 1, and the outer shell 2 is sleeved on the outside of the air inlet pipe 6. A buffer bin 7 is provided in the central section of the air inlet pipe 6. A rotating shaft 18 is rotatably installed inside the buffer bin 7, and blades 19 distributed in a ring array are provided on the outer wall of the rotating shaft 18. Support rings 8 are provided on the front and rear sides of the buffer bin 7. Springs 23 distributed in a ring array are provided inside the support ring 8. A positioning block 20 is provided at one end of the spring 23, and a ball 21 is provided at one end of the positioning block 20.

[0033] The rotating shaft 18 is located at one end outside the buffer bin 7 and is provided with a guide wheel 22 with an annular rolling groove on the outer wall. The ball 21 is rollingly mounted on the outer wall of the guide wheel 22.

[0034] A buffer chamber 7 is located within the intake duct 6. Inside, an annular array of blades 19 is mounted, supported by a rotating shaft 18. The blades 19 rotate through vortexes and gas flow, damping and absorbing gas shock. Furthermore, an outer elastic member applies resistance to control the rotation of the rotating shaft 18, reducing the impact force of the gas. This design effectively reduces the transmission of shock when the gas enters the MVR centrifugal steam compressor pump body. This improvement can help prevent surge in the intake duct 6 or system. When gas flow changes and pressure fluctuates dramatically, the arrangement of the blades 19 within the buffer chamber 7 reduces velocity variations in the gas flow, stabilizes airflow dynamics, and disperses or absorbs some of the shock and pressure, helping to prevent system surge to a certain extent. The advantages lie in reducing gas shock, smoothing airflow, and alleviating stress on the equipment. However, care must be taken to ensure that the material and structure of the blades 19 are suitable for sustained, stable operation and withstanding the impact of gas flow. While this improvement has some vibration reduction effect on the intake duct 6 / centrifugal steam compressor and helps smooth gas flow, its primary purpose is to reduce shock and fluctuations in gas flow rather than typical surge vibration prevention. Therefore, this design can play a certain role in vibration reduction and help reduce the impact of gas entering the MVR centrifugal steam compressor. However, further evaluation is needed in combination with system characteristics to improve the anti-surge design.

[0035] The intake pipe 6 transports the gas to the interior of the MVR centrifugal steam compressor body 1. The MVR steam compressor draws in gas or steam through the high-speed rotating impeller under the action of centrifugal force, and then discharges it after acceleration. Inside the impeller, the gas is compressed and pressurized. At the same time, the design of the blades 19 realizes the cooling and pressure increase of the gas, and finally outputs high-temperature and high-pressure compressed gas. As part of the MVR centrifugal steam compressor system, the intake pipe 6 has the main function of introducing gas or steam and delivering it to the compressor body for compression. The gas or steam enters the intake pipe 6 from the air inlet, flows through the buffer tank 7 and improved structure set at the top of the pipe, and reduces the impact, vibration and noise that may be generated during the gas flow. The design inside the intake pipe 6 should be conducive to reducing resistance, weakening vortex, and smoothing gas flow, ensuring that the gas smoothly reaches the impeller part of the steam compressor for compression.

[0036] A support rod 24 is provided at one end of the positioning block 20 , and the support rod 24 is located inside the second spring 23 . The outer wall of the support ring 8 is provided with support columns 10 that are symmetrically distributed and connected to the inner wall of the shell 2 .

[0037] The support ring 8 is embedded with a sliding sleeve 25 , and one end of the support rod 24 is slidably inserted into the sliding sleeve 25 .

[0038] When the rotating shaft 18 rotates, it drives the guide ring to rotate, and the guide ring and the ball 21 slide together, and the elastic force of the ball 21 acts on the guide ring, exerting resistance to the rotation process of the guide ring, thereby reducing the rotation speed of the rotating shaft 18. At the same time, the spring slides slightly, and the guide rod slides inside the spring 9 to guide the spring 9 and prevent the spring 9 from deviating outward, thereby making the resistance component stable to use.

[0039] Example 3:

[0040] It includes an MVR centrifugal steam compressor body 1, an outer shell 2, an air inlet pipe 6, a buffer bin 7 and a support ring 8. An air inlet pipe 6 is provided at one end of the MVR centrifugal steam compressor body 1, and the outer shell 2 is sleeved on the outside of the air inlet pipe 6. A buffer bin 7 is provided in the central section of the air inlet pipe 6. A rotating shaft 18 is rotatably installed inside the buffer bin 7, and blades 19 distributed in a ring array are provided on the outer wall of the rotating shaft 18. Support rings 8 are provided on the front and rear sides of the buffer bin 7. Springs 23 distributed in a ring array are provided inside the support ring 8. A positioning block 20 is provided at one end of the spring 23, and a ball 21 is provided at one end of the positioning block 20.

[0041] The rotating shaft 18 is located at one end outside the buffer bin 7 and is provided with a guide wheel 22 with an annular rolling groove on the outer wall. The ball 21 is rollingly mounted on the outer wall of the guide wheel 22.

[0042] A buffer chamber 7 is located within the intake duct 6. Inside, an annular array of blades 19 is mounted, supported by a rotating shaft 18. The blades 19 rotate through vortexes and gas flow, damping and absorbing gas shock. Furthermore, an outer elastic member applies resistance to control the rotation of the rotating shaft 18, reducing the impact force of the gas. This design effectively reduces the transmission of shock when the gas enters the MVR centrifugal steam compressor pump body. This improvement can help prevent surge in the intake duct 6 or system. When gas flow changes and pressure fluctuates dramatically, the arrangement of the blades 19 within the buffer chamber 7 reduces velocity variations in the gas flow, stabilizes airflow dynamics, and disperses or absorbs some of the shock and pressure, helping to prevent system surge to a certain extent. The advantages lie in reducing gas shock, smoothing airflow, and alleviating stress on the equipment. However, care must be taken to ensure that the material and structure of the blades 19 are suitable for sustained, stable operation and withstanding the impact of gas flow. While this improvement has some vibration reduction effect on the intake duct 6 / centrifugal steam compressor and helps smooth gas flow, its primary purpose is to reduce shock and fluctuations in gas flow rather than typical surge vibration prevention. Therefore, this design can play a certain role in vibration reduction and help reduce the impact of gas entering the MVR centrifugal steam compressor. However, further evaluation is needed in combination with system characteristics to improve the anti-surge design.

[0043] The intake pipe 6 transports the gas to the interior of the MVR centrifugal steam compressor body 1. The MVR steam compressor draws in gas or steam through the high-speed rotating impeller under the action of centrifugal force, and then discharges it after acceleration. Inside the impeller, the gas is compressed and pressurized. At the same time, the design of the blades 19 realizes the cooling and pressure increase of the gas, and finally outputs high-temperature and high-pressure compressed gas. As part of the MVR centrifugal steam compressor system, the intake pipe 6 has the main function of introducing gas or steam and delivering it to the compressor body for compression. The gas or steam enters the intake pipe 6 from the air inlet, flows through the buffer tank 7 and improved structure set at the top of the pipe, and reduces the impact, vibration and noise that may be generated during the gas flow. The design inside the intake pipe 6 should be conducive to reducing resistance, weakening vortex, and smoothing gas flow, ensuring that the gas smoothly reaches the impeller part of the steam compressor for compression.

[0044] A support rod 24 is provided at one end of the positioning block 20 , and the support rod 24 is located inside the second spring 23 . The outer wall of the support ring 8 is provided with support columns 10 that are symmetrically distributed and connected to the inner wall of the shell 2 .

[0045] The support ring 8 is embedded with a sliding sleeve 25 , and one end of the support rod 24 is slidably inserted into the sliding sleeve 25 .

[0046] When the rotating shaft 18 rotates, it drives the guide ring to rotate, and the guide ring and the ball 21 slide together, and the elastic force of the ball 21 acts on the guide ring, exerting resistance to the rotation process of the guide ring, thereby reducing the rotation speed of the rotating shaft 18. At the same time, the spring slides slightly, and the guide rod slides inside the spring 9 to guide the spring 9 and prevent the spring 9 from deviating outward, thereby making the resistance component stable to use.

[0047] The air inlet pipe 6 and the buffer bin 7 are sleeved with a mesh sleeve 5 on the outside, and the mesh sleeve 5 is sleeved with a heat preservation sleeve 4 on the outside.

[0048] Flanges 3 are provided at both ends of the air inlet pipe 6 , and the flanges 3 are located at the openings at both ends of the shell 2 .

[0049] The flange 3 is made of stainless steel, carbon steel, alloy steel, etc. According to the requirements of the specific use scenario, the material with good high temperature resistance and corrosion resistance is selected. The flange 3 blank of the specified size is cut from the raw material during the processing process. The flange 3 blank is accurately processed with a lathe for the inner and outer diameters to ensure the accuracy of its connection with the pipeline. The connecting bolt holes are opened on the flange 3 to connect with the intake pipe 6 or other components. The surface flatness and smoothness of the flange 3 are guaranteed to ensure the sealing. The flange 3 is heat-treated to improve its strength and hardness. It is painted or galvanized as needed to prevent the flange 3 from rusting and corrosion. The mesh sleeve 5 is filled with sound-absorbing materials, such as sound-absorbing cotton, glass fiber, etc. Through the absorption and reflection of these materials, It effectively reduces the noise level during gas flow. The porous structure design, damping layer superposition, special shape design, etc. can also improve the silencing effect of the mesh sleeve 5. The outside of the insulation sleeve 4 is covered around the air intake pipe 6. Usually, thermal insulation materials such as rock wool, aluminum silicate felt, etc. are used to wrap the outer wall of the air intake pipe 6. The design and thickness of the insulation sleeve 4 need to consider the use environment and working conditions of the air intake pipe 6 to ensure the insulation effect and reduce heat loss. The insulation sleeve 4 should be installed reasonably and kept in good condition to keep the internal temperature of the air intake pipe 6 stable and improve energy efficiency and system performance. Through the material selection and manufacturing process of the flange 3, the silencing design of the mesh sleeve 5 and the selection of insulation materials of the insulation sleeve 4, the functionality and performance of the air intake pipe 6 components can be provided with necessary support and guarantee.

[0050] A positioning ring 17 is sleeved on the outside of the air inlet pipe 6. The inner walls of the openings at both ends of the housing 2 are provided with mounting tubes 12 distributed in a ring array. One end of the mounting tube 12 is provided with a rubber head 16 that fits with the outer wall of the positioning ring 17.

[0051] A piston 15 is slidably mounted on the inner wall of the mounting cylinder 12, and a plug rod 11 is provided at one end of the piston 15;

[0052] A sealing ring 13 is provided on the inner wall of one side of the mounting cylinder 12, and one end of the plug rod 11 is slidably inserted into the sealing ring 13, and one end of the plug rod 11 is connected to the inner wall of the openings at both ends of the housing 2;

[0053] The outer wall of the mounting tube 12 is sleeved with a limit ring 14, and one end of the limit ring 14 is provided with a spring 9 which is sleeved on the outside of the mounting tube 12 and connected to the inner wall of the openings at both ends of the housing 2;

[0054] When the air intake pipe 6 is impacted, the impact force will act on the spring mounting cylinder 12, the spring 9 will be forced to shrink, and the hydraulic oil inside the mounting cylinder 12 will squeeze the piston 15. An oil groove is provided between the hydraulic oil and the mounting cylinder 12. The narrow flow channel of the oil groove exerts resistance to the hydraulic oil, thereby exerting a damping effect on the spring 9 during the expansion and contraction process, buffering the air intake pipe 6, and can effectively absorb and reduce the impact force on the air intake pipe 6, preventing the impact from being directly transmitted to the pipeline and connecting components, reducing the risk of damage to the system. When the buffer device is working, it can keep the air intake pipe 6 relatively stable when subjected to external force, avoid the normal operation of the system affected by accidental collision or vibration, reduce the vibration and impact of the air intake pipe 6 and related components, thereby reducing mechanical wear and fatigue, extending the service life of the equipment, protecting the pipeline and other key components from damage by external impact, and ensuring safety and stability during operation.

[0055] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0056] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An MVR centrifugal steam compressor air intake anti-surge pipe, comprising an MVR centrifugal steam compressor body (1), a housing (2), an air intake pipe (6), a buffer chamber (7) and a support ring (8), characterized in that: An air inlet pipe (6) is provided at one end of the MVR centrifugal steam compressor body (1), a housing (2) is sleeved on the outer side of the air inlet pipe (6), a buffer chamber (7) is provided at the central section of the air inlet pipe (6), a rotating shaft (18) is rotatably mounted inside the buffer chamber (7), blades (19) distributed in an annular array are provided on the outer wall of the rotating shaft (18), support rings (8) are provided on both the front and rear sides of the buffer chamber (7), springs (23) distributed in an annular array are provided inside the support ring (8), a positioning block (20) is provided at one end of the springs (23), and a ball (21) is provided at one end of the positioning block (20); The rotating shaft (18) is located at one end outside the buffer bin (7) and is provided with a guide wheel (22) with an annular rolling groove on its outer wall, and the ball (21) is rollingly mounted on the outer wall of the guide wheel (22); A support rod (24) is provided at one end of the positioning block (20), and the support rod (24) is located inside the second spring (23). The outer wall of the support ring (8) is provided with support columns (10) that are symmetrically distributed and connected to the inner wall of the housing (2); The support ring (8) is embedded in a mounting sleeve (25), and one end of the support rod (24) is slidably inserted into the sleeve (25); A positioning ring (17) is sleeved on the outside of the air inlet pipe (6), and mounting tubes (12) distributed in a ring array are provided on the inner walls of the openings at both ends of the shell (2), and a rubber head (16) is provided at one end of the mounting tube (12) and is in contact with the outer wall of the positioning ring (17).

2. The MVR centrifugal steam compressor intake anti-surge pipe according to claim 1, characterized in that: The air inlet pipe (6) and the buffer bin (7) are sleeved with a mesh sleeve (5) on their outer sides, and the mesh sleeve (5) is sleeved with a heat-insulating sleeve (4) on its outer sides.

3. The MVR centrifugal steam compressor intake anti-surge pipe according to claim 1, characterized in that: Flanges (3) are provided at both ends of the air inlet pipe (6), and the flanges (3) are located at the openings at both ends of the shell (2).

4. The MVR centrifugal steam compressor intake anti-surge pipe according to claim 1, characterized in that: A piston (15) is slidably mounted on the inner wall of the mounting cylinder (12), and a plug rod (11) is provided at one end of the piston (15).

5. The MVR centrifugal steam compressor intake anti-surge pipe according to claim 4, characterized in that: A sealing ring (13) is provided on the inner wall of one side of the installation cylinder (12), one end of the plug rod (11) is slidably inserted into the sealing ring (13), and one end of the plug rod (11) is connected to the inner walls of the openings at both ends of the shell (2).

6. The MVR centrifugal steam compressor intake anti-surge pipe according to claim 5, characterized in that: The outer wall of the installation tube (12) is sleeved with a limit ring (14), and one end of the limit ring (14) is provided with a spring (9) sleeved on the outside of the installation tube (12) and connected to the inner walls of the openings at both ends of the shell (2).

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